It is not known whether DeChambeau made contact with Trump privately, but on Saturday R&A chief executive Mark Darbon was asked whether the President had been in touch.
“No, I have not received a call from President Trump,” he told BBC Sport.
“Irrespective of which player this affected, it is the same decision – from a rules perspective it was clear cut.”
It is understood that after his round on Saturday, DeChambeau visited Darbon, where his request to gain possession of his scorecard from the previous day was declined.
Rory McIlroy responded to DeChambeau’s penalty by calling his rival’s antics “performative”.
DeChambeau finished the tournament in 14th place, six shots behind champion Ryan Fox, and refused to speak to the waiting media on Sunday.
“A lot of ups and downs this week, to say the least. But I’m proud of the way I fought through it,” DeChambeau said on Instagram.
“Thank you to all my supporters for carrying me through. Onwards and upwards from here. Congratulations to Ryan Fox on an incredible win!”
– AFP